CN217122999U

CN217122999U - Assembly tool

Info

Publication number: CN217122999U
Application number: CN202220850663.2U
Authority: CN
Inventors: 赵闯; 姚庭
Original assignee: Faoyiwei Suzhou Robot System Co ltd
Current assignee: Faoyiwei Suzhou Robot System Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-08-05
Anticipated expiration: 2032-04-13

Abstract

An embodiment of the utility model provides an assembly fixture relates to work piece assembly field. This assembly fixture is used for assembling axle and flange, it is including assembling seat and pressfitting spare, be equipped with the assembly cavity and the spacing through-hole of mutual intercommunication on the assembling seat, wherein, the assembly cavity is used for the holding flange, pressfitting spare slidable ground is connected in the assembling seat, the cylindricality groove has been seted up on the pressfitting spare, cylindricality groove and spacing through-hole are used for spacing axle jointly, the axial lead of spacing through-hole and the axial lead collineation in cylindricality groove, the slip direction of pressfitting spare and the axial lead of spacing through-hole are parallel, the cylindricality groove is spacing axle jointly with spacing through-hole, so that the axial lead of axle and the axial lead collineation of spacing through-hole, through press pressfitting spare, make the axle can interference fit in the flange, can effectively reduce the value of beating after the axle installation.

Description

Assembly tool

Technical Field

The utility model relates to a work piece assembly field particularly, relates to an assembly fixture.

Background

The shaft and flange fit installation is a common application in shaft installation, for example, in the field of robots, a cantilever shaft and a flange are in interference installation, the effect of the interference installation is to enable the cantilever shaft and a central hole of the flange to be in interference installation, so that the cantilever shaft and the flange rotate synchronously, the application of the interference installation is widely applied in robot joints, wherein the cantilever shaft is used as a routing shaft of the robot joint and is connected with an output flange.

In the prior art, after the cantilever shaft is assembled in the interference assembly process of the cantilever shaft and the flange, the shaft has large bounce.

SUMMERY OF THE UTILITY MODEL

The utility model provides an assembly fixture, it can axle and flange assembly back, reduces the value of beating of axle.

The embodiment of the utility model discloses a can realize like this:

an embodiment of the utility model provides an assembly fixture for assembly axle and flange, it includes:

the assembling seat is provided with an assembling cavity and a limiting through hole which are communicated with each other, and the assembling cavity is used for accommodating the flange;

the pressing piece is connected to the assembling seat in a sliding mode, a cylindrical groove is formed in the pressing piece, and the cylindrical groove and the limiting through hole are used for limiting the shaft together;

the axial lead of the limiting through hole is collinear with the axial lead of the cylindrical groove, and the sliding direction of the pressing piece is parallel to the axial lead of the limiting through hole.

Optionally, the assembly seat still is equipped with the spacing groove, the pressfitting spare slidable set up in the spacing groove, the spacing groove with spacing through-hole intercommunication, the axial lead of spacing groove with the axial lead collineation of spacing through-hole.

Optionally, the pressing piece comprises a supporting column and a top flange, and the top flange is fixedly connected to one end of the supporting column away from the assembling chamber;

at least part the support column slides and sets up in the spacing groove, the cylindrical groove set up in the support column, the top flange is used for the butt the axle.

Optionally, a top flange is provided with a top limiting hole, the top limiting hole is communicated with the cylindrical groove, the axial lead of the cylindrical groove is collinear with the axial lead of the top limiting hole, and the top limiting hole is used for abutting against the end of the shaft.

Optionally, the pressing member further includes a fixing member, and the fixing member penetrates through the top flange to fixedly connect the supporting pillar and the top flange.

Optionally, the assembly tool further comprises a first sliding sleeve, the first sliding sleeve is fixedly mounted in the limiting groove, and at least part of the supporting column is slidably connected in the first sliding sleeve;

the axial lead of the first sliding sleeve and the axial lead of the limiting groove are collinear.

Optionally, the assembly tool further comprises a second sliding sleeve, the second sliding sleeve is fixedly mounted on the limiting through hole, and an axis of the second sliding sleeve is collinear with an axis of the limiting through hole;

the cylindrical groove and the second sliding sleeve are used for limiting the shaft together.

Optionally, the top flange has a diameter greater than a diameter of the support post.

Optionally, the assembly chamber is a cylinder chamber, and the diameter of the flange is smaller than that of the cylinder chamber.

Optionally, the pressing piece and the assembling seat are detachably connected.

The utility model discloses assembly fixture's beneficial effect includes, for example:

the embodiment of the utility model provides an assembly fixture for assembling a shaft and a flange, which comprises an assembly seat and a pressing part, wherein the assembly seat is provided with an assembly cavity and a limiting through hole which are communicated with each other, the assembly cavity is used for accommodating the flange, the pressing part is connected to the assembly seat in a sliding way, a cylindrical groove is arranged on the pressing part, the cylindrical groove and the limiting through hole are used for limiting the shaft jointly, the axial lead of the limiting through hole and the axial lead of the cylindrical groove are collinear, the sliding direction of the pressing part is parallel to the axial lead of the limiting through hole, the flange is placed behind the assembly cavity, the shaft passes through the limiting through hole and is clamped on a mounting hole of the flange, the shaft is adapted to the cylindrical groove of the pressing part, and the pressing part abuts against the end part of the shaft, wherein the shaft is adapted to the limiting through hole, at the moment, the cylindrical groove and the limiting through hole limit the shaft jointly, so that the axial lead of the shaft and the axial lead of the limiting through hole are collinear, through press fit pressfitting piece, make the axle can interference fit in the flange, at this in-process, whole axle is spacing in cylindrical groove and spacing through-hole, and the moving direction of axle is unanimous with the sliding direction of pressfitting piece, has effectively reduced the value of beating after the axle installation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an assembly tool provided in an embodiment of the present invention;

fig. 2 is a sectional view of an assembly fixture provided in an embodiment of the present invention;

fig. 3 is an exploded view of an assembly fixture provided in an embodiment of the present invention.

Icon: 1000-assembling a tool; 100-an assembly seat; 110-an assembly chamber; 120-limiting through holes; 130-a limiting groove; 200-a press-fit piece; 210-cylindrical slots; 220-support column; 230-a top flange; 231-end limiting holes; 240-a fixture; 300-a first sliding sleeve; 400-a second sliding sleeve; 2000-axis; 3000-flange.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The shaft and flange fit installation is a common application in shaft installation, for example, in the field of robots, a cantilever shaft and a flange are in interference installation, the effect of the interference installation is to enable the cantilever shaft and a central hole of the flange to be in interference installation, so that the cantilever shaft and the flange rotate synchronously, the application of the interference installation is widely applied in robot joints, wherein the cantilever shaft is used as a routing shaft of the robot joint and is connected with an output flange. In the prior art, after the cantilever shaft is assembled in the interference assembly process of the cantilever shaft and the flange, the shaft has large bounce. For example, in the prior art, a manual installation mode is generally adopted, the cantilever shaft is pressed into the corresponding flange center installation hole, and the installation direction of the shaft cannot be ensured to be fixed due to manual installation, so that the bounce value of the shaft is large after installation.

In view of this, the assembly fixture provided in the embodiments of the present invention can solve this problem.

Referring to fig. 1-3, an assembly fixture 1000 is provided in the present embodiment, which will be described in detail below.

The embodiment of the utility model provides an assembly fixture 1000, be used for assembly axle 2000 and flange 3000, it includes assembly seat 100 and pressfitting spare 200, be equipped with the assembly cavity 110 and the spacing through-hole 120 of mutual intercommunication on the assembly seat 100, wherein, assembly cavity 110 is used for holding flange 3000, pressfitting spare 200 slidable ground is connected in assembly seat 100, cylindrical groove 210 has been seted up on the pressfitting spare 200, cylindrical groove 210 and spacing through-hole 120 are used for common spacing axle 2000, the central line collineation of the central line of spacing through-hole 120 and cylindrical groove 210, the slip direction of pressfitting spare 200 is parallel with the central line of spacing through-hole 120, in this embodiment, axle 2000 is the cantilever axle.

When the shaft 2000 and the flange 3000 are assembled, firstly, the flange 3000 is placed in the assembly chamber 110, then the assembly seat 100 is placed on the working platform, the shaft 2000 penetrates through the limiting through hole 120 and is clamped on the central mounting hole of the flange 3000, then the pressing piece 200 is assembled, namely, the shaft 2000 is matched with the cylindrical groove 210 of the pressing piece 200, the pressing piece 200 abuts against the end part of the shaft 2000, and the shaft 2000 is matched with the limiting through hole 120.

At this time, the cylindrical groove 210 and the limiting through hole 120 limit the shaft 2000 together, so that the center line of the shaft 2000 and the center line of the limiting through hole 120 are collinear, the pressing piece 200 is pressed by the pressing machine, so that the shaft 2000 can be in interference fit with the flange 3000, in the process, the whole shaft 2000 is limited in the cylindrical groove 210 and the limiting through hole 120, the moving direction of the shaft 2000 is consistent with the sliding direction of the pressing piece 200, and the jumping value of the shaft 2000 after installation is effectively reduced.

In order to facilitate the sliding of the pressing element 200 and ensure that the sliding direction of the pressing element 200 is not changed, the assembly seat 100 is further provided with a limiting groove 130, the pressing element 200 is slidably disposed in the limiting groove 130, wherein the pressing element 200 comprises a supporting column 220 and a top flange 230, one side of the top flange 230 away from the side for pressing is provided with a groove, the end of the supporting column 220 is fitted in the groove, specifically, the top flange 230 is fixedly connected to one end of the supporting column 220 away from the assembly chamber 110, at least part of the supporting column 220 is slidably disposed in the limiting groove 130, the cylindrical groove 210 is disposed in the supporting column 220, the top flange 230 is used for abutting against the shaft 2000, and the top flange 230 is extruded by the press to drive the shaft 2000 to be fitted on the flange 3000.

In addition, in this embodiment, in order to facilitate the sliding of the pressing element 200, the assembly fixture 1000 further includes a first sliding sleeve 300, the first sliding sleeve 300 is a hollow graphite column, the first sliding sleeve 300 is fixedly installed in the limiting groove 130, specifically, the first sliding sleeve 300 may be in interference fit with the limiting groove 130, at least a portion of the supporting column 220 is slidably connected in the first sliding sleeve 300, and an inner diameter of the first sliding sleeve 300 is equal to an outer diameter of the supporting column 220, so as to prevent the sliding direction of the supporting column 220 from deviating.

The limiting groove 130 is communicated with the limiting through hole 120, the central line of the limiting groove 130 is collinear with the central line of the limiting through hole 120, specifically, the inner cavity of the first sliding sleeve 300 is communicated with the limiting through hole 120, the central line of the first sliding sleeve 300 is collinear with the central line of the limiting through hole 120, and meanwhile, the central line of the first sliding sleeve 300 is collinear with the central line of the limiting groove 130.

In this embodiment, the top flange 230 is provided with an end limiting hole 231, the end limiting hole 231 is communicated with the cylindrical groove 210, a center line of the cylindrical groove 210 is collinear with a center line of the end limiting hole 231, the end limiting hole 231 is used for abutting against an end of the shaft 2000, meanwhile, the end limiting hole 231 is adapted to an end of the shaft 2000 to limit radial movement of the shaft 2000, and meanwhile, a certain gap can be formed between the cylindrical groove 210 and an outer wall of the shaft 2000 to ensure that a deformation amount of the shaft 2000 cannot exceed the gap in an assembling process of the shaft 2000, so that shaft run-out is reduced.

To connect the top flange 230 and the support column 220, the press 200 further includes fasteners 240, the fasteners 240 being M4 socket head cap screws, specifically four in number. The fixing member 240 penetrates the top flange 230 to fixedly connect the supporting column 220 and the top flange 230. The pressing element 200 and the assembly base 100 in this embodiment can be detachably connected, and meanwhile, the diameter of the top flange 230 is larger than the diameter of the supporting column 220 and larger than the outer diameter of the first sliding sleeve 300, so as to prevent the top flange 230 from being transferred into the inner cavity of the first sliding sleeve 300 during the pressing process, which is not convenient for the next pressing operation.

In addition, this assembly fixture 1000 still includes second sliding sleeve 400, second sliding sleeve 400 fixed mounting is in spacing through-hole 120, specifically, second sliding sleeve 400 interference fit is in spacing through-hole 120 and be the copper sheathing to avoid in the assembly process, the piece that second sliding sleeve 400 was produced by the collision of axle 2000 falls into the mounting hole of flange 3000, the central line of second sliding sleeve 400 and the central line of spacing through-hole 120 collineation, cylindrical groove 210 and second sliding sleeve 400 are used for spacing axle 2000 jointly, and the central line of second sliding sleeve 400 and the central line of cylindrical groove 210 collineation, wherein, axle 2000 and second sliding sleeve 400 adaptation, second sliding sleeve 400 can restrict the radial movement of axle.

In this embodiment, the assembly chamber 110 is a cylindrical chamber, the diameter of the flange 3000 is smaller than that of the cylindrical chamber, and the height of the assembly chamber 110 is higher than that of the flange 3000, so that the flange 3000 is movable in the assembly chamber 110 due to the limitation of the installation direction and the movement of the shaft 2000, so that the tolerance requirement on the flange 3000 in the machining process can be reduced, and the machining requirement is lowered.

In summary, the assembly fixture 1000 is used for assembling the shaft 2000 and the flange 3000, and includes an assembly seat 100 and a press-fitting member 200, the assembly seat 100 is provided with an assembly chamber 110 and a limiting through hole 120 which are communicated with each other, wherein the assembly chamber 110 is used for accommodating the flange 3000, the press-fitting member 200 is slidably connected to the assembly seat 100, the press-fitting member 200 is provided with a cylindrical groove 210, the cylindrical groove 210 and the limiting through hole 120 are used for jointly limiting the shaft 2000, a central line of the limiting through hole 120 and a central line of the cylindrical groove 210 are collinear, a sliding direction of the press-fitting member 200 is parallel to the central line of the limiting through hole 120, the cylindrical groove 210 and the limiting through hole 120 jointly limit the shaft 2000, so that the central line of the shaft 2000 and the central line of the limiting through hole 120 are collinear, the press-fitting member 200 is pressed by a press, the shaft 2000 can be in interference fit with the flange 3000, and a run-out value of the shaft 2000 after installation can be effectively reduced.

Meanwhile, specific requirements can be not made on the dimensional tolerance of the flange 3000, the influence of accumulated assembly errors caused by flange errors is reduced, and the assembly tool 1000 has fewer parts and is convenient to assemble and use.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an assembly fixture for assembly axle and flange, its characterized in that, assembly fixture includes:

the flange assembling device comprises an assembling seat (100), wherein the assembling seat (100) is provided with an assembling cavity (110) and a limiting through hole (120) which are communicated with each other, and the assembling cavity (110) is used for accommodating the flange;

the pressing part (200) is connected to the assembling seat (100) in a sliding mode, a cylindrical groove (210) is formed in the pressing part (200), and the cylindrical groove (210) and the limiting through hole (120) are used for limiting the shaft together;

the axial lead of the limiting through hole (120) and the axial lead of the cylindrical groove (210) are collinear, and the sliding direction of the pressing part (200) is parallel to the central line of the limiting through hole (120).

2. The assembly tooling of claim 1, wherein the assembly base (100) is further provided with a limiting groove (130), the pressing part (200) is slidably arranged in the limiting groove (130), the limiting groove (130) is communicated with the limiting through hole (120), and the central line of the limiting groove (130) is collinear with the central line of the limiting through hole (120).

3. The assembly tool according to claim 2, wherein the pressing piece (200) comprises a supporting column (220) and a top flange (230), and the top flange (230) is fixedly connected to one end of the supporting column (220) far away from the assembly chamber (110);

at least part of the supporting column (220) is arranged in the limiting groove (130) in a sliding mode, the cylindrical groove (210) is arranged in the supporting column (220), and the top flange (230) is used for abutting against the shaft.

4. The assembly tooling of claim 3, wherein an end limiting hole (231) is formed in the top flange (230), the end limiting hole (231) is communicated with the cylindrical groove (210), the center line of the cylindrical groove (210) is collinear with the center line of the end limiting hole (231), and the end limiting hole (231) is used for abutting against the end of the shaft.

5. The assembly tooling of claim 3, wherein the pressing member (200) further comprises a fixing member (240), and the fixing member (240) penetrates through the top flange (230) to fixedly connect the supporting column (220) and the top flange (230).

6. The assembly tool according to claim 3, further comprising a first sliding sleeve (300), wherein the first sliding sleeve (300) is fixedly installed in the limiting groove (130), and at least part of the supporting column (220) is slidably connected in the first sliding sleeve (300);

the central line of the first sliding sleeve (300) and the central line of the limiting groove (130) are collinear.

7. The assembly tool according to claim 3, further comprising a second sliding sleeve (400), wherein the second sliding sleeve (400) is fixedly mounted on the limiting through hole (120), and the center line of the second sliding sleeve (400) and the center line of the limiting through hole (120) are collinear;

the cylindrical groove (210) and the second sliding sleeve (400) are used for limiting the shaft together.

8. The assembly tooling of claim 3 wherein the diameter of the top flange (230) is greater than the diameter of the support post (220).

9. The assembly tool according to claim 1, characterized in that the assembly chamber (110) is a cylinder chamber, and the diameter of the flange is smaller than the diameter of the cylinder chamber.

10. The assembly tool according to claim 1, characterized in that the pressing part (200) and the assembly seat (100) are detachably connected.